# A149327 (b-file synthesized from sequence entry)
0 1
1 1
2 4
3 12
4 38
5 147
6 542
7 2025
8 8040
9 31830
10 126026
11 512397
12 2091005
13 8534552
14 35263659
15 146386680
16 608204284
17 2542561872
18 10671803324
19 44849685497
20 189137805612
21 800087487080
22 3389342949285
23 14389283370260
24 61229743794326
25 260908050824695
26 1113484169340549
27 4760259426285405